Detections
Analytics
RHEL 3 / 4 / 5 : fetchmail (RHSA-2009:1427)
medium Nessus Plugin ID 40901
Synopsis
The remote Red Hat host is missing a security update.Description
An updated fetchmail package that fixes multiple security issues is now available for Red Hat Enterprise Linux 3, 4, and 5.This update has been rated as having moderate security impact by the Red Hat Security Response Team.
Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links, such as SLIP and PPP connections.
It was discovered that fetchmail is affected by the previously published 'null prefix attack', caused by incorrect handling of NULL characters in X.509 certificates. If an attacker is able to get a carefully-crafted certificate signed by a trusted Certificate Authority, the attacker could use the certificate during a man-in-the-middle attack and potentially confuse fetchmail into accepting it by mistake. (CVE-2009-2666)
A flaw was found in the way fetchmail handles rejections from a remote SMTP server when sending warning mail to the postmaster. If fetchmail sent a warning mail to the postmaster of an SMTP server and that SMTP server rejected it, fetchmail could crash. (CVE-2007-4565)
A flaw was found in fetchmail. When fetchmail is run in double verbose mode ('-v -v'), it could crash upon receiving certain, malformed mail messages with long headers. A remote attacker could use this flaw to cause a denial of service if fetchmail was also running in daemon mode ('-d'). (CVE-2008-2711)
Note: when using SSL-enabled services, it is recommended that the fetchmail '--sslcertck' option be used to enforce strict SSL certificate checking.
All fetchmail users should upgrade to this updated package, which contains backported patches to correct these issues. If fetchmail is running in daemon mode, it must be restarted for this update to take effect (use the 'fetchmail --quit' command to stop the fetchmail process).
Solution
Update the affected fetchmail package.See Also
https://access.redhat.com/security/cve/cve-2007-4565
https://access.redhat.com/security/cve/cve-2008-2711
Plugin Details
Severity: Medium
ID: 40901
File Name: redhat-RHSA-2009-1427.nasl
Version: 1.25
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 9/9/2009
Updated: 1/14/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.7
CVSS v2
Risk Factor: Medium
Base Score: 6.4
Temporal Score: 4.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:3, cpe:/o:redhat:enterprise_linux:4, p-cpe:/a:redhat:enterprise_linux:fetchmail, cpe:/o:redhat:enterprise_linux:5.4, cpe:/o:redhat:enterprise_linux:4.8
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 9/8/2009
Vulnerability Publication Date: 8/27/2007